"j" > wrote in message
. com...
> I am not a mechanic, but this is in regards to a 1994 Chevrolet Corsica
with
> a 6 cylinder engine that has 138,000 miles on it, is still in very good
> condition, and has always had Mobil 1 synthetic oil.
>
> It is my contention that the PCV valve, on an engine this old, is likely
to
> decrease the engine life due to the fact that it is introducing
contaminants
> into the intake and cumbustion chamber.
>
> In order to make my car last longer, I am thinking of permanently removing
> the PCV valve and replacing it with a homemade filter, but leaving the
hose
> that the PCV valve is connected to unplugged all the time and hanging in
the
> air with the homemade filter attached. In other words, I will unplug the
PCV
> valve and throw it away, leave the hose hanging in the air, and where the
> PCV valve had formerly been attached to the hose there will be a filter
> (primarily to prevent bugs and dust from entering the engine).
>
> Where the PCV valve had formerly been plugged into the valve cover, I will
> place a homemade filter in the hole on the valve cover. This will allow to
> crankcase to ventilate, but there will be no longer be any sucking action.
I
> remember as a child seeing "oil breather caps" on valve covers. I don't
see
> any reason why this technique shouldn't work on a modern engine.
>
> However, not being a mechanic, I would rather have some qualified guidance
> from this newsgroup prior to pursuing this idea any further than the
thought
> stage. I have already plugged my EGR valve port to prevent it from
> introducing contaminants into the engine and the engine seems to be idling
> smoother, so why not do the same with the PCV valve?
>
>

Bad idea. You need the pcv to pull fresh air through the crankcase to remove
the harmful vapors. Older models had a down draft tube that acted like a
venturi to suck the vapors out of the engine. Your engine is actually
designed and calibrated to depend on those recirculated vapors back into the
intake. What you are planning will ruin the engine.
--
Kevin Mouton
Automotive Technology Instructor
"If women don't find you handsome, they should at least find you handy"
Red Green